County



(No Model I P; CHAMBERS & T. noun. STOP-OFF vJSHQ'JJIONI'OR KNITTING MACHINES.

No.519,'690.' Pate ted M 8,1894.

-' UNITED STATES FRANK CHAMBERS AND THOMAS DOLI), F A MDEf, NEW JERSEY; SAID PATENT OFFICE.

CIIAMB ERS ASSIGNUR 'lO HARRY K. 'llIOfllAS, OF NElV YORK COUNTY, N. Y.

STOP-OFF MOTION FOR KNITTING-MACHINES.

SPECIFICATION forming partof Letters Patent No. 519,690, dated May 8, 1894, Application filed June 8,1893. Serial No. 477,002. [No model.)

To all whom it may concern.- Be it known that we, FRANK CHAMBERS and THOMAS DoUn, citizens of the United States ,of America, residing at Camden, in the county of Camden and State of New Jersey, haveinvented certain new and useful Improvements in Stop-Off Motions for Knitting-Illachines, of which the following is aspecification.

Our invention is designed to provide a stop off motion adapted for use particularlywith circular machines and to receive any number of threads which it may be desired to feed to the machine.

In the drawingsz-Figure is a plan view of the device; Fig. 2, a side view. a detached view, of the thread guide levers; Fig. 3, a similar view showing the position of the parts when the thread breaks, and Fig. 4, a detail view of part of the deyice.

4 The thread from the bobbin 1 or bobbins passes up and over the overlapping ends of the levers 2, 2. pivoted to the frame 3, at 4, 4, and having counter-balancing weights 5, 5 at their outer ends to balance the pull of the thread on the inner ends of the levers as the thread passes over the same. From these levers the thread passes through the latch or guide 6 pivotallysupported at 7 and arranged to fall when released to engage the pinsm on the revolving pin wheel 8. normally up by the thread which passes from the latch through the post or standard 9 but when the thread breaks or is slackened at the latch by its fall or passage between the two overlapping levers the latch falls and engages the pins so that the revolution of the wheel will draw the latch forward and thus withdraw the slide ]0 from the notch of vertical rod 11, so that said rod will be released to fall and operate the clutch through any suitable connections, The connection between the latch or guide and the slide consists of the rock shaft 12, having the arm 13 to which the latch is pivoted and the arm 15 at the central part of the rock shaft to which the slide is connected by the link 16. The rock shaft is journaled in a rear extension 17, of theframe and the slide and vertically movable shipper rod are supported by the bracket 18, of the frame. The pin wheel shaft 19, is journaled Fig. is

' 'lhelatch is heldin bearings 20 and this shaft is of sufiicient length to receive any'number of pin wheels according to the number of threads tobe fed to the machine and the rock shaft may carry a corresponding number of latches.

We have shown only two pin wheels and latches but it will be understood that anv number maybe arranged on the shaft. The

as having been withdrawn by reason of the engagement of the latch with the pin wheel. The fall of the latch or guide to engage the 6 fallen by reason of breakage of the thread and the slide pin wheel may result also from separation of.

the levers 2 and the passage or fallof the thread between the overlapping ends of the said levers as shown in dotted lines Fig.4and this will take placeif thereis anyobstruction to the thread running oil of the bobbin by reason of knots or entanglement, or it may result from the contact of a knot or otherobstruction with the levers 2, which as before stated are weighted to j ust counter-balance the normal-pull of the thread. The stop off device mayof course be operated by simply pressing with the hand upon the bobbin or restraining in any way the freemovement of the thread over the lapped ends of the levers The passage of the thread between said levers creates suiiicientslackness at the latch to allow it to fall and engage the pin wheel. A releasing lever 25, is pivoted to the frame for freeing the latches from engagement with the pin wheel.

We claiin 1. in combination, the shaft 19, the series of pin wheels thereon, the rock shaft 12- the series of pivoted latches carried thereby, the

shipper red, the slide for holding the same up, the connection between said slide and the rock shaft, and the releasing lever 25 arranged to engage the pivoted latches, substantially as described.

2. Ill-CQlIlbiIlfltiOD, the pin wheels, the series of pivoted latches, the releasing-slide connected therewith to be operated when the thread fails, and the two weighted levers piv- 5 otally supportedand extending toward each other with their 'free ends together, said 1evers acting to guide the series of threads, substantially as described. p

3., In combination, the shipper connections,

to the guide for the thread with means for conf 

